Konica Minolta BIZHUB 25E Field Engineering Manual page 249

No. Symptom
18 An unusual sound
occurs.
19 The document
memory can not
be backed up.
What to confirm
1. Does the sound occur during
scanning?
2. Does the sound occur during
scanning using the ADF or document
glass ?
3. Are there any objects interfering with
the roller or roller shaft?
4. Has the ADF motor sounded
abnormal?
5. Are there any objects interfering with
the ADF gear?
6. Has the FBS motor sounded
abnormal?
7. Are there any objects interfering with
the FBS gear?
8. Are there any objects interfering with
the FBS pulley?
9. Are there any objects interfering with
the carriage traveling surface?
10. Does the sound occur while
recording?
11. If you remove the drum or toner
cartridge, the sound still occurs.
12. Are there any objects interfering
with the drum gear, developing
gear, or transfer gear?
13. If you replace the toner or drum
cartridge, the symptom will be fixed.
14. If you replace the transfer roller or
fuser, the symptom will be fixed.
15. Are there any objects interfering
with the driving mechanism?
16. If you replace the main control
board, the symptom will be fixed.
1. Have the main control board and
the capacitor been mounted to C42?
2. Is the capacitor voltage above +0.7V
when the machine in shut down?
3. Did you charge the capacitor for
more than 10 minutes?
4. If you replace the main control
board, the symptom will be fixed.
Countermeasure
Yes Check No. 2.
No Check No. 10.
Yes Check No. 3.
No Check No. 6.
Yes Remove the objects.
No Check No. 4.
Yes Clean the roller. Check the harness.
No Check No. 5.
Yes Remove the objects.
No Check No. 6.
Yes Check the harness.
No Check No. 7.
Yes Remove the objects.
No Check No. 8.
Yes Remove the objects.
No Check No. 9.
Yes Remove the objects using lint free
No waste.
Check No. 10.
Yes Check No. 11.
No Check No. 17.
Yes Check No. 12.
No Replace the toner or drum cartridge.
Yes Remove the objects.
No Check No. 13.
Yes Replace the toner or drum cartridge.
No Check No. 14.
Yes Replace the transfer roller or fuser.
No Check No. 15.
Yes Remove the objects.
No Check No. 16.
Yes Replace the main control board.
No Replace the machine.
Yes Check No. 2.
No Connect it.
Yes Check No. 4.
No Check No. 3.
Yes Check No. 4.
No Charge the battery.
Yes Replace the main control board.
No Replace the machine.
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